Staircase Pressurization

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Project Information

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Date

System Definition

System Type

Staircase

Staircase with Lobby and Lift

Number of levels

Staircase length (m)

Staircase width (m)

Staircase height (m)

Airflow Criterion (m/s)

Exit Level

Pressure difference criterion – Closed doors (Pa)

Boundary Conditions for Staircase

Single leaf doors – Open into the staircase

Single leaf doors – Open outwards from the staircase

Double leaf doors

Pivoted, no weather stripping (m2 per m length)

Pivoted and weather stripped (m2 per m length)

Sliding (m2 per m length)

Exterior building walls (m2)

Internal and stair walls (m2)

Lift well walls (m2)

Leakage Area [AE] for Staircase (m2)

Airflow required to [Stair]

Airflow required to [Stair] +50%

Boundary Conditions for Lobby

Single leaf doors – Open into the staircase

Single leaf doors – Open outwards from the staircase

Double leaf doors

Pivoted, no weather stripping (m2 per m length)

Pivoted and weather stripped (m2 per m length)

Sliding (m2 per m length)

Exterior building walls (m2)

Internal and stair walls (m2)

Lift well walls (m2)

Leakage Area [AE] for Lobby (m2)

Airflow required to [Lobby]

Airflow required to [Lobby] +50%

Boundary Conditions for Lift

Exterior building walls (m2)

Internal and stair walls (m2)

Lift well walls (m2)

Top Vent

Leakage Area [AE] for Lift (m2)

Airflow required to [Lift]

Lift Shaft Walls

W1 (m)

W2 (m)

W3 (m)

High (m)

Leakage Area [AE] for Lift Shaft Walls (m2)

Airflow required to [Lift Shaft Walls]

Total Airflow Required Mode 1

Airflow required to [Mode 1]

Mode 3

Fire Fighting – Velocity Criterion

Open Lift Door (2m High x 1m Wide) Leakage Area

Airflow required to [Open Lift Door] (m3/s)

Lift Top Vents

Airflow required to [Lift Top Vents]

Total Airflow required to [Lift Shaft]

Door size fire floor (m2)

Airflow to fire floor

Open exit door size (m2)

Airflow through open exit door

Summary

Fan Duty Required @ 50 Pa + System Resistance

Area Of Pressure Relief Staircase

Area Of Air/Smoke Relief Vent

Door size fire floor (m2)

Airflow to fire floor

Open exit door size (m2)

Airflow through open exit door

Summary

Fan Duty Required @ 50 Pa + System Resistance

Area Of Pressure Relief Staircase

Area Of Air/Smoke Relief Vent

System Type

Staircase

Staircase with Lobby

Staircase with Lobby and Lift

Number of levels

Staircase length (m)

Staircase width (m)

Staircase height (m)

Airflow Criterion (m/s)

Exit Level

Pressure difference criterion – Closed doors (Pa)

Boundary Conditions for Staircase

Single leaf doors – Open into the staircase

Single leaf doors – Open outwards from the staircase

Double leaf doors

Pivoted, no weather stripping (m2 per m length)

Pivoted and weather stripped (m2 per m length)

Sliding (m2 per m length)

Exterior building walls (m2)

Internal and stair walls (m2)

Lift well walls (m2)

Leakage Area [AE] for Staircase (m2)

Airflow required to [Stair]

Airflow required to [Stair] +50%

Boundary Conditions for Lobby

Single leaf doors – Open into the staircase

Single leaf doors – Open outwards from the staircase

Double leaf doors

Pivoted, no weather stripping (m2 per m length)

Pivoted and weather stripped (m2 per m length)

Sliding (m2 per m length)

Exterior building walls (m2)

Internal and stair walls (m2)

Lift well walls (m2)

Leakage Area [AE] for Lobby (m2)

Airflow required to [Lobby]

Airflow required to [Lobby] +50%

Boundary Conditions for Lift

Exterior building walls (m2)

Internal and stair walls (m2)

Lift well walls (m2)

Top Vent

Leakage Area [AE] for Top Vent

Leakage Area [AE] for Lift (m2)

Airflow required to [Lift]

Airflow required to [Lift] +50%

Mode 1

Total Airflow Required Mode 1

Airflow required to [Mode 1]

Airflow required to [Mode 1] +50%

Mode 2

Mode 2 [Pressure Criterion]

Exit Door Size (m2)

Air Flow (m3/s)

Airflow through two open accommodation doors assuming open accommodation area at

Air Flow (m3/s)

Airflow required to [Mode 2 Pressure Criterion] + [Mode 1]

Mode 2 [Velocity Criterion]

Fire Floor Door Size (m2)

Airflow through open fire floor door (m3/s)

Airflow through open exit door (m3/s)

Airflow through open accommodation door (m3/s)

Total airflow required in Mode 2 (m3/s)

Summary

Fan Duty Required @ 50 Pa + System Resistance

Airflow Stair

Airflow to Stair lift

Airflow to Lobby

Airflow to Lift

Area Of Pressure Relief Staircase Only

Area Of Pressure Relief Staircase with Lobby

Area Of Pressure Relief Staircase with Lobby and Lift

Area Of Air/Smoke Relief Vent

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